Hi,
Seems like you want to build a face recognition system along with password control. Validating password with usernames is not a deep learning problem for that you can check out,
For face recognition systems you need to build a similarity function using pre-trained architectures like ‘googleNet’ or ‘ResNet.’ This similarity function checks whether two images are same or not by comparing the final outputs of fully connected layer in the backbone architecture that you have used. To learn more, you can search for Siamese network or One-shot learning networks and learn how they work.
Also, you can look at these similar examples provided by MathWorks,
Hope this helps.
